QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

24km W of Westmorland, CA

· 3.8 km deep · released about 7.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Imperial County 49 kmRiverside County 76 kmSan Diego County 84 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.6 (ml)
Depth
3.8 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Imperial County, 49 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1681 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 7.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.3 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 33.0550, -115.8788. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Imperial County, CA 49 km (30 mi) W of here earthquakes near Imperial County
Riverside County, CA 76 km (47 mi) S of here earthquakes near Riverside County
San Diego County, CA 84 km (52 mi) E of here earthquakes near San Diego County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

46 earthquakes have been recorded within 50 km since this one.

  1. 1.7 10km SE of Ocotillo Wells, CA
  2. 1.5 12km WNW of Calipatria, CA
  3. 1.6 11km SW of Niland, CA
  4. 1.6 4km SE of Bombay Beach, CA
  5. 1.6 21km NW of Progreso, B.C., MX
  6. 2.3 6km ESE of Ocotillo Wells, CA
  7. 1.6 8km NE of Imperial, CA
  8. 2.9 8km W of Calipatria, CA
  9. 1.6 19km WNW of Progreso, B.C., MX
  10. 1.6 12km SSW of Salton City, CA
  11. 1.7 6km WSW of Bombay Beach, CA
  12. 1.8 4km NW of El Centro, CA
  13. 2.8 12km SSW of Salton City, CA
  14. 1.7 16km NE of Borrego Springs, CA
  15. 2.4 13km SW of Ocotillo Wells, CA

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 5.3 on 2021-06-05 — it released about 310,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.